I would give them ZERO stars if I could. I learned about them after I started getting spam from them. Everyday, multiple emails. Whatevs, I figure I'l unsubscribe & be done. LOL if only. In order to unsubscribe (or communicate with them at all) I need an account - I don't have one because it's spam. Kinda shady, and also a violation of the CAN-SPAM act. I send them an email complaining about this, get something back saying it's all fixed. NOPE. Still get the emails. Complain on their facebook, get blocked. Still get the emails. Complain on twitter. Still get emails. And the thing is? THEIR "DEALS" are TERRIBLE. A quick search has consistently found the exact same deal cheaper somewhere else.
EDIT
After I wrote I had trouble contacting them (or to be more accurate, getting them to respond) other people on this site started complaining about the same thing. I finally got a response by CC'ing my emails to as many people on their board I could find on various social platforms (linkedin, etc). It worked for me, it may work for you. Here's some of the emails I dug up, hope this helps:
*******@zozi.com
*******@zozi.com
*******@zozi.com
*******@gmail.com
*******@shambroom.com
Also, to the "Zozi I" account that has responded to almost every complaint with a snarky "If you are a real customer just call us" cut and paste comment: You are not doing your job. Clearly people HAVE tried to contact you on multiple occasions, but cannot get past your automated responses. By replying with a canned response - like you're doing here - you're demonstrating that you don't really give a damn about the issues people are having. Most of us - myself included - will be pretty forgiving of a new company's stumbles, as long as you actually communicate with us and hear what we're saying. How you've approached customer service is the opposite of this and it alienates people. It's up to you to fix this. Hire some more interns or something, because right now you're failing hard.